fix(analyzer): add Korean context terms to KrRrnRecognizer (#2212)

[bodapatisaikrishna]

Change Description

Fixes an omission in KrRrnRecognizer.CONTEXT where only English terms ("Korean RRN", "RRN", etc.) were defined, unlike all other Korean recognizers (KrDriverLicenseRecognizer, KrPassportRecognizer, KrFrnRecognizer, KrBrnRecognizer) which include native Korean keywords.

Because Korean Resident Registration Numbers (주민등록번호) primarily appear in Korean documents and text, context enhancement was never firing for native Korean context phrases. This was especially problematic for post-October 2020 RRNs (which lack the pre-2020 checksum algorithm and return pattern score 0.5), leaving them below typical analyzer acceptance thresholds without the context boost.

Changes:

• Added standard Korean context terms to KrRrnRecognizer.CONTEXT:
  • "주민등록번호" (Resident Registration Number)
  • "주민번호" (short form: Resident Number)
  • "주민등록증" (Resident Registration Card / ID card)
  • "주민등록" (Resident Registration)
  • "신분증" (ID card / Identification)
  • "본인인증" (Identity Verification)
• Added unit tests in presidio-analyzer/tests/test_kr_rrn_recognizer.py:
  • Validated presence of Korean context keywords in KrRrnRecognizer.context.
  • Tested end-to-end score enhancement using LemmaContextAwareEnhancer (score boosted from 0.5 to 0.85 with supportive_context_word set).
  • Added negative control test ensuring unrelated context does not boost scores.
  • Added Korean context sentences to parametrized recognition tests.

Issue reference

Fixes #2212

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